One way in which the tropical world can surpass the temperate regions in food and fiber production is to employ a system of continuous cropping. In tropical Asia for example large areas of paddy land remain idle during the ...

Morphological, physical, chemical, and mineralogical properties of six Black Earth profiles from the island of Oahu, Hawaii were studied. 1he probable source of the dark color was also investigated. The properties of these ...

Most definitions of soil have included references to its function as a medium for plant growth. Several investigators believe that because correlations between soil classes and crop yield are weak, conventional soil surveys ...

An investigation was undertaken to select the appropriate methods and sampling times for measuring root cation exchange capacity (C.E.C.) and anion exchange capacity (A.E.C.) and these together with root weight and root ...

The dispersion of chloride, nitrate, potassium, calcium, and phosphate was investigated in three tropical soils represented by three Hawaiian soils through a specially designed flow apparatus. Observed differences in the ...

Interest in bauxitic soils has increased in recent years in Hawaii since Sherman (1953) pointed out that some Hawaiian soils could be considered ferruginous bauxites. Research in bauxitic soils was stimulated with the ...

The study of micro-nutrients in tropical soils has been receiving increasing attention in the past decade. There is an awareness that a great shortage of information exists today regarding the status and availability of ...

Studies on nitrogen transformation and nitrate adsorption were conducted with Hawaiian soils belonging to the Akaka, Wahiawa, Paaloa, Koko, and Lualualei series. There was no definite or conclusive trend of NH4- or NO3-N ...

Four soils derived from volcanic ash deposited on the slopes of Mauna Kea were collected and examined physico-chemically and mineralogically. A Reddish Brown (Waikaloa), two Reddish Prairie (Mahoelua and Waikii), and a ...